Ball journal and thrust bearing.



FRIEDRICH \IVILHELM WITTE, OF LEIPZ'IG-PLAGWITZ, GERMANY.

BALL JOURNAL AND rlmtrsr BEARING.

Specification of Letters Patent.

lPatented Aug'.-25,. 1908.

1 Application filed Kay 6, 1907. Serial No 372,093

Naumburgerstrasse 25, Germany, have 1nvented a certain new and useful Improvement in Ball Journal and Thrust Bearings; and I do hereby declare the followin to'be a full, clear, and exact description the inyention, such as will enable Others skilled 1n the art to which it appertains-to make and use the same, reference being had to the accompan drawings, and to letters of reference mar ed thereon, which form a part of this specification. a

My vention relates to ball journal bearings of the two point type .of the class which are provided-also with means .for taking'up end thrust by a central fixed flange on the shaft sleeve and loose rings on which both the journal and thrust .balls bear, such as that described for instance in the specification to myqBritish Letters Patent No. 11808 of 19031 The object of the resent invention is to enable the journal ba ls in that form to run in grooved tracks both in the cup'and cone portions carrying same. In my previous specification one of these tracks was a plain cylindrical surface but as is well known the form of bearin which gives the best results is that in whic both tracks are grooved, but in the class of combined bearings inquestion this construction gives rise to difficulties in the-adjustment of the parts which renders it impracticable. This difficulty lies in the impossibility in manufacture of maintaining the re uired distance apart between the centers 0 the grooves forming the tracks for the journal balls and .the 'bottom of the grooves for the thrust balls owing to the variations which must occur in temper.- ing and grinding, a very slight variation necessitating an-ad'ustment of the loose. part carrying a 'ourna and a thrust track in the direction w ch will cause the grooved tra for the journal the latter. I overcome this difiiculty by separating the thrust part of the loose ring from the journal art of same, which is thus left free, and Ifurther rovide means for adjustin or allowing of t e adjustment ofhone of t e parts independently of the ot er.

balls to be non-central with 7 It is not new to have in a single casing both a thrust and a 'ournal bearingboth of which are provided fu y with grooved tracks for the balls and in one form this has been proposed with the addition of a flan e mounted on a sleeve on the shaft whic sleeve abuts against the cone ortion of the journal bearing. Thus in t is form a composite 'cone portion may be said to be formed having grooved tracks at right angles for the journal and thrust balls and with this an adjustment for the thrust balls has been provided, the special object of which was to move the shaft longitudinally through the composite cone.

In order that the said invention may be clearly understood itwill now be described with reference to the accompanying drawings in. which:

Figure 1 is a longitudinal section of one half of a journal and thrust bearing constructed in accordance with the present in- What modified form. I

In said drawings as in my aforesaid prior specification, a indicates the sleeve or bushing forming the cone of the journal secured to the axle or shaft at; b is the thrustresisting flange thereon, having on its opposite sides grooved tracks '0 c of suitable curvature for the thrust bearing balls d (1 arranged in ball cages p; e e are the tracks on the sleeve portion a for the balls f of the journal bearing which are arrange journal bearing members, and g g the arts vhich serve as thrust bearing morn ers. The space between the partsg and 9 1s ada case consistsofa sleeve 1t,

justable by means of a device which in this surrounding one vention and Fig. 2 is a similar view of a some-' bearing and Is It inqball cages r, g g

are bushings or cups upon whichthe balls other, g 9 being the rings which serve as.

than the journal ring 9 and consequently projects beyond the edges of same at both ends thereof. At its outer end face, the sleeve n abuts against a lock nut m, said lock nut thus constituting an adjusting ring which presses the sleeve against the adjacent thrust bearin ring g and thence transmits the pressure t rough the balls (I d and flange b to the other thrust bearing rin g which may be thus pressed against a s oulder h of the casing for the purpose of limiting the movement of the last named thrust bearing ring 91 towards the adjacent j ournal' ring g. To revent the adjusting ring m from being accldentally turned, there may be rovided a screw 0,'which can alsoif desire be ma nipulated after the adjusting ring m has been screwed into place, so as to correct if necessary the adjustments of the thrust bearing rings. i

It will be seen that with the above mode of construction, the necessary distance between the grooved tracks k and Z is attained by the movement of the rings g and g relatively to" tracks e and c. i If g and g were fixed it would be almost impossible to so set them that the ballgrooves would exactly correspond with the fixed tracks 6 and c and if the grooves did not exactly -corres ond with the tracks it would be impossiblh to prevent side or thrust pressure other than that for which the parts were designed.

The example shown in Fig. 2 is similar tothe one shown in Fig. 1, exceptthat the sleeve 72? is integral with the adjacent thrust bearing ring 9 and that, in place of the shoulder h shown in Fig. 1, the other ring g is provided with a sleeve or prolongation n which surroundsthe corresponding journal ring 9' and bears against the inwardly extending end-flange h of the casing b so as to take up the end thrust of the ringm.

Other variations of the arrangement may however be employed.

It will be obvious that in place of the end flange h of the casing, a second screwed adjustlng ring. and loose sleeve similar to those shown at m n in Fig. 1 may be employed. In such a case, the shoulder it might also be dispensed with.

The balls f may be put between their grooved tracks by any suitable means which will enable the operation to be done and preferably by such as will not'interfere with the running surface of the tracks. Many of these devices exist. For instance rooves or cuts may be made in one or both 0 the arts 9 or a partly entering the tracks and the alls be filled in by-these meansor a portion of one or both of the parts 9 or a communicating with the track may be cut away for the same purpose or the balls may be filled in between the ring 9 and-part aby the well known way of merely placing the two parts eccentrically and filling in as many balls between them as can be put in, the balls being afterwards spaced apart by a cage or spacing device. The means employed for this purpose however need not be here further described.

It is obviousthat if only one journal bearmg is required, or thethrust to be taken is on y in one direction, that one row of journal balls, or one row of thrust balls, or both together, with their attendant parts can be dispensed with.

What I claim is 1 1. A ball journal and thrust bearing comprising a member having grooves therein, a

ournal ring having a groove forming a race prising a shaft, a sleeve on said shaft having a pair of grooves and having a central flange provided with grooves on opposite sides thereof, a pair of journal rings each provided with a groove forming a race with one of the grooves of said sleeve, journal balls in said races, and a pair of thrust rings separate from .said journal rings and each provided. with a groove forming a race with one of the grooves of said flange, and thrust balls in said races.

3. A ball journal and thrust bearing comprising a shaft, a sleeve on said shaft, having a pair of grooves and having a central flange provided with grooves on opposite sides thereof, a pair of journal rings each provided with a groove forming a rare with one of the grooves of said sleeve, journal balls in said.

races, apair of thrust rings separate from said journal rings and each provided with a groove forming a race with one of the grooves of said flange, thrust balls in said races, and means for adjusting said thrust rings independently of the journal rings.

4:. A ball journal and thrust bearing comprising a shaft, a sleeve on said shaft having a pair of grooves and havinga central flange provided with grooves on opposite sides thereof, a pair of journal rings each provided with a groove forming a'race with one of the grooves ,of said sleeve, journal balls in said races, a pair of thrust rings separate from said journal rings and each provided with a groove forming a race with one of the grooves of said flange, thrust balls in said races, and The foregoing specification signed at Leipmearis fpr ailjuksting said1 thrust rindgs indezig, Germany this 4th day of April, 1907.

enc enty o t e journa rin s, sai means omprising a sleeve surrounding one of the A FRIEDRICH WHHELM WITTE 5 journal rings'and adapted to bear against one In presence of two Witnesses of the thrust rings, and means for shifting i RUDOLPH FRIOKE, said last-named sleeve. v SOUTHARD P. WARNER. 

